London is a city in Pope County, Arkansas, United States. The population was 1,039 at the 2010 census. It is part of the Russellville Micropolita…London is a city in Pope County, Arkansas, United States. The population was 1,039 at the 2010 census. It is part of the Russellville Micropolitan Statistical Area. London is located at 35°19′33″N 93°14′12″W / 35.32583°N 93.23667°W.